// 模拟实现 lodash 中的 curry 方法

function getSum (a, b, c) {  
    return a + b + c
}

const curried = curry(getSum)

console.log(curried(1, 2, 3))
console.log(curried(1)(2, 3))
console.log(curried(1, 2)(3))


function curry (func) {
    return function curriedFn(...args) {
        // 判断实参和形参的个数
        if (args.length < func.length) {
            return function () {
                return curriedFn(...args.concat(Array.from(arguments)))
            }
        }
        return func(...args)
    }
}